Practical Pleated Air Filter (2-Pack) - 20" x 20" x 5" Quantity:Default åÊWe look forward to delivering

åÊWe look forward to delivering our American-made

In general

To find the size the old unit should have sizing information printed on it

the A+2000 uses stage loading

One way to overcome this problem is to increase the surface area of the filter media

Practical Pleated Air Filter (2-Pack) - 20" x 20" x 5" Quantity:Default åÊWe look forward to deliveringYes, we even have the odd sizes! The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters. In general, the more efficient a filter is at removing particles, the greater it's resistance to airflow, and the greater the pressure drop it creates. One way to overcome this problem is to increase the surface area of the filter media. The "Practical Pleat" contains over 500% greater surface